Evance R9000 Vs Proven WT6000

“The Evance R9000 is the latest variant of the long established 5kW small wind turbine from the UK manufacturer Iskra, recently re-branded as Evance.

The R9000 is the first turbine to be equipped with Reactive Pitch technology, a unique control concept developed and patented by Evance. Reactive Pitch guarantees that the blades will capture exactly the right amount of energy according to the wind speed and generator loading conditions.

At low to moderate wind speeds the Reactive Pitch mechanism captures the maximum energy possible from the wind by holding the blades with absolute precision at the maximum efficiency position.

At higher wind speeds, when the energy in the wind exceeds the maximum capacity of the generator, the R9000’s unique Reactive Pitch mechanism automatically pitches the blades. This regulates energy capture, rotor speed, and the loads experienced by the turbine structure. It will therefore capture the full 5kW power, and the reduction in stresses mean that the R9000 offers greater safety and survivability

The R9000 also has a patented high-efficiency generator which converts up to 96% of the energy captured from the wind into useful electricity. The generator is specifically designed for the R9000, and is integrated into the turbine’s rotor.

What all that means is that the Evance R9000 can capture more energy across the range of wind speeds, especially the lower and moderate speeds that are normally experienced on the majority of the mainland UK.
The combination of the advanced pitch control, which is much more effective than the Proven’s “coning” mechanism, and the more efficient generator enable the Evance R9000 to out perform the Proven WT6000 at lower to moderate wind speeds…”

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Evance R9000 Wind Turbine

An overview of the Evance R9000 5kW  wind turbine suitable for residential, farming and commercial installations.

Evance R9000 5kW Wind Turbine

Evance R9000 5kW Wind Turbine

Performance:

  • Class leading energy yield
  • Reactive Pitch technology continuously optimises aerofoil positioning
  • Generates from wind speed of 2.5m/s(5.6mph)
  • No cut out wind speed

Design Excellence:

  • Blends into the environment for low visual impact
  • Lower material use for high ecological performance
  • Aerodynamic and contemporary
  • Created from big wind technology and automotive expertise

Low Maintenance:

  • Autonomous operation up to 60m/s(134mph)
  • Direct drive – no gearbox
  • Patented ElectroBrake – automatic with no moving parts

Safety:

  • Reactive Pitch automatically limits maximum of 230rpm whilst generating maximum energy. No cut out speed or intervention needed.
  • Brake system tower top mounted – no dependence on external system
  • ElectroBrake provides secondary backup safety system

Quiet Operation:

  • System engineered for minimum noise generation
  • Advanced blade design for low noise aerodynamics and balance
  • Direct drive – no gearbox noise

Efficiency:

  • Proprietary Reactive Pitch technology ensures perfect positioning of the aerofoils to maximise yield
  • Patented axial flux generator sets new standard of 96% efficiency
  • Upwind architecture with tail vane ensures precise yaw control

Durability:

  • All parts manufactured in composite, stainless steel or coated to automotive standards
  • Blade erosion resistance tested to double military standards
  • Designed to IEC61400-2, the international standard for wind turbines
  • 5 year warranty underpinned by more than 2.5 million hours in the field

Reliability:

  • Reactive Pitch is a simple and durable mechanical system
  • ElectroBrake has no moving parts
  • Backed by manufacturer trained and certified service network
  • Integrated generator eliminates complexity
  • Existing installations average >99% up time

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